基于SARS-CoV-2帕帕因样蛋白酶 (PLpro) 的片段屏幕
Ashley J Taylor1, Kangsa Amporndanai1, Tyson A Rietz1
1Department of Biochemistry, Vanderbilt University School of Medicine, Nashville, Tennessee 37232-0146, United States.
ACS medicinal chemistry letters
|August 14, 2024
概括
研究人员确定了77个针对SARS-CoV-2帕帕因样蛋白酶 (PLPro) 的新型碎片,这是病毒复制和免疫抑制中的关键酶. 这一发现为开发针对冠状病毒的新抗病毒药物开辟了道路.
科学领域:
- 病毒学 病毒学
- 药物发现 药物发现 药物发现
- 结构生物学 结构生物学
背景情况:
- 冠状病毒对全球健康造成重大威胁,COVID-19大流行就是一个例子.
- SARS-CoV-2 帕帕因样蛋白酶 (PLPro) 对于病毒复制和免疫逃避至关重要,使其成为主要的药物标.
- PLPro在所有冠状病毒中保持高度,这表明它具有广泛的治疗潜力.
研究的目的:
- 为了识别SARS-CoV-2帕帕因样蛋白酶 (PLPro) 的新型抑制剂.
- 探索基于碎片的药物发现方法,针对关键的冠状病毒目标.
- 为了发现PLPro抑制剂的新化学类.
主要方法:
- 利用蛋白质观察核磁共振 (NMR) 实验进行碎片选.
- 针对SARS-CoV-2 PLPro.进行了基于碎片的查.
- 分析了碎片蛋白质复合体的NMR扰动数据和X射线结晶学结构.
主要成果:
- 从基于片段的屏幕上识别了77个命中片段.
- 核磁共振和X射线晶体学揭示了碎片与PLPro上的两个不同的位置结合.
- 鉴定到的碎片代表了新的化学类别,与以前报告的抑制剂不同.
结论:
- 基于碎片的查是有效的发现SARS-CoV-2 PLPro的抑制剂.
- 鉴定到的碎片为开发新的抗病毒疗法提供了基础.
- 这项研究揭示了一种新的PLPro抑制剂类别,具有潜在的广谱冠状病毒活性.
相关概念视频
01:29Coronavirus
Coronaviruses, including the severe acute respiratory syndrome coronavirus (SARS-CoV), are enveloped viruses characterized by their single-stranded, positive-sense RNA genome and helical nucleocapsid structure. The hallmark of these viruses is their club-shaped spike (S) glycoproteins that protrude from the viral envelope, facilitating attachment to host cells. Typically, coronaviruses infect the upper respiratory tract, often causing mild or asymptomatic disease. However, certain strains like...
01:19Inhibitors of Virion Maturation and Assembly
As part of their replication cycle, certain viruses synthesize long precursor proteins called polyproteins within infected host cells. In human immunodeficiency virus (HIV), two major polyproteins are produced: Gag and Gag-Pol. The Gag polyprotein supplies the structural components of the virus, while Gag-Pol includes essential viral enzymes such as reverse transcriptase, integrase, and protease. After synthesis, these polyproteins move to the host cell membrane, where they assemble into an...